How this term is used
Use this as a practical limit for a specific microphone position, speaker position and number of open channels—not as a fixed product specification.
Event AV resource
Gain before feedback
What it means, when it matters, and how to use it in an event brief.
You can start without a complete equipment list. The message is editable before you send it.
DecisionsOwnersAcceptance checks
Term
Gain before feedback
usable microphone level before the system begins to ring
Running close to this limit is what causes ringing or howling through active microphones.
How to verify it
Open the maximum planned channels and raise programme speech gradually. The required level should be reached without ringing or loss of clarity.
Facts to record
- Microphone and speaker positions
- Maximum open channels
- Required speech level and test position
Worked use
A lectern plan may keep the main speakers ahead of the microphone, move a nearby monitor away and require a rear-table test before another microphone is opened.
Ready for the next step?
Send the four facts that shape the AV setup
Add the date, venue, guest count and programme for Gain before feedback. You do not need to know the equipment names, and the message is editable before you send it.
- Date
- Venue
- Audience
- Programme
Keep planning
Gain before feedback
Send the date, venue or area, guest count, programme and required outputs. You can start without a complete equipment list.
How this guidance is researched
This guidance separates general advice from event-specific facts. Confirm venue conditions and your event details before finalising the requirement.